(19)
(11) EP 2 803 436 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.10.2015 Bulletin 2015/42

(43) Date of publication A2:
19.11.2014 Bulletin 2014/47

(21) Application number: 14168375.5

(22) Date of filing: 14.05.2014
(51) International Patent Classification (IPC): 
B23F 23/06(2006.01)
B23Q 3/18(2006.01)
B23B 31/02(2006.01)
B23B 25/06(2006.01)
 B23F 17/00(2006.01)
B23Q 17/22(2006.01)
B23B 41/00(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 14.05.2013 IT TO20130385

(71) Applicant: Ge Avio S.r.l.
Rivalta di Torino (IT)

(72) Inventors:
  • Milletarì, Salvatore
    10143 Torino (IT)
  • Siccardi, Rinaldo
    10043 Orbassano (IT)

(74) Representative: Boggio, Luigi et al
Studio Torta S.p.A. Via Viotti, 9
10121 Torino
10121 Torino (IT)

   


(54) Method and automatic machine for machining a gear wheel


(57) The axis of rotation of a gear wheel (2) subjected to thermal treatment and comprising at least one intermediate crown wheel (3) and a pair of lateral tubular hubs (5) (6) arranged on opposite sides of the crown wheel (3) is restored automatically by coupling a first (5) of the hubs to a head (14) rotating about a fixed axis (15) of own rotation axis, displacing the other hub (6) in a direction transverse to the fixed axis (15) until both of the hubs (5) (6) and the crown wheel (3) are brought into positions substantially sharing the fixed axis (15) and providing on each of the hubs (5) (6) a respective centring surface (50) (51) sharing the fixed axis (15) without uncoupling the first hub (5) from the rotating head (14) and keeping the gear wheel (2) in a vertical and angularly fixed position.







Search report









Search report